package com.dang.alex.util;

import java.util.UUID;

public class EmailCode {
	public static String createEmailCode() {
		UUID uuid = UUID.randomUUID();
		return uuid.toString();
	}
	
	public static void main(String[] args) {
		System.out.println(EmailCode.createEmailCode());
		System.out.println(EmailCode.createEmailCode());
		System.out.println(EmailCode.createEmailCode());
	}
	

	public static String getUid(String code) {
		if(code == null) {
			return null;
		}
		int index = code.lastIndexOf("-");
		if(index == -1) {
			return null;
		}
		return code.substring(index+1);
	}
	

	public static String getUUID(String code) {
		if(code == null) {
			return null;
		}
		int index = code.lastIndexOf("-");
		if(index == -1) {
			return null;
		}
		return code.substring(0,index);
	}
}
